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Finding the Fourth Proportional to 54,261.40, 81,392.10 and 53,289.40

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Solution

The fourth proportional to 54,261.40, 81,392.10 and 53,289.40 is: 79,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,261.40 : 81,392.10 = 53,289.40 : x
  2. Step 2: Convert to fraction form
    54,261.40/81,392.10 = 53,289.40/x
  3. Step 3: Cross multiply
    54,261.40x = 81,392.10 × 53,289.40
  4. Step 4: Simplify right side
    54,261.40x = 4,337,336,173.74
  5. Step 5: Solve for x
    x = 4,337,336,173.74/54,261.40
  6. Step 6: Final answer
    x = 79,934.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.